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银杏叶为银杏科植物银杏树 Ginkgo biloha L的干燥叶,其提取物黄酮类和苦内酯具有广泛的生物学效应,近年来的临床和实验研究发现银杏叶提取物可降血脂、改善心功能、促进脑循环;它既能对抗肾上腺素所致的血管收缩,又有拟肾上腺素作用,缓解支气管平滑肌痉挛等效应。但银杏叶提取物对胃肠道平滑肌功能活动的影响尚未见报道,本工作观察银杏叶提取物对家兔离休胃肠道平滑肌电活动的影响,以期探讨其对消化道的调整作用及其可能机制。
Ginkgo biloba is a dry leaf of Ginkgo biloba L. Ginkgo biloha L. Its extract flavonoids and bitteractone have a wide range of biological effects. Recent clinical and experimental studies have found that Ginkgo biloba extract can reduce blood fat and improve heart function. Promotes cerebral circulation; it not only counteracts vasoconstriction caused by epinephrine, but also has adrenergic effects and relieves the effects of bronchial smooth muscle spasm. However, the effects of Ginkgo biloba extract on the function of gastrointestinal smooth muscle have not been reported yet. This study was to observe the effect of Ginkgo biloba extract on the motility of gastrointestinal smooth muscle in rabbits in order to explore its regulatory effect on the digestive tract and its possible mechanism.